Manufacture of coke.



No. 881,885. Y l PATENTED MAR. 1o, 1808.

UJ. H. HILLMAN. MANUFACTUBE 0F COKE,

APPLICATION FILED NOV-.30,1901

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I mem?? Y l @ffm/4am EA STAT JOHN n. HILLMAN, or rITTsBURe,PEruvsvLvAlvIAQ MANUFACTURE oF come.

o. 881,685. Specification of Tarball whom it may concer/n,.- i i IBeyitknown that I, JOHN H; HILLMAN,l a citizen ofy the United 4 States,residing .at "Pittsburg, in vthe county of Allegheny and 5 StateofPennsylvania, have invented certain Anew andvus'eful Improvementsinthe Manu n actureof Coke, of which thezfollowing is a f 'secifieation, reference being had therein -to f-t'e'-accompanying.drawing to IMy invention `consistsgof an improvementvin'- the art lof manufacturing coke and refers' a' particular] -to themethod or'eprocess of ref #moving as es,` dirt or `waste material from Ithev surface ofthe coke Within the oven im` fme'diately after theburning operation'while fthe coke is still 'practically incandescent,and J beforequenching.

' In carrying out my improvement I'ein# -'ployla blast of v-air directedacross the surface zdofthe incandescent coke within the oven',

Which-is preferably of longitudinal tunnell harm, ofthe type known asthe Belgian oven, -on any similarconstruction whereby an inlet#is-provided for theintroduction ofthe blow- 251ingiapparatus and anoppositely located out-v let openinor 'for the escape of the ashes, etc.

llnthe ravvingaccompanyin "this Aa' pli# catiom- Figure 1 represents a'ongitu inal vertical sectional view' through a' coke oven ofthe Belgiantype, showing theend walls and doors removed or opened andthe blow? pipeinserted at one endi Fig. 2is a hori; zontal sectional view on the lineII, Il, sliowing a plurality of ovens assembled. Fig. 3-is a face-viewshowing the end ofone of the ovens. i

@vens of the type to which my im rover- Inent is best adapted are in theform ofllongi- Y tudinal tunnels having arched roofs extendojing upwardlf toward the center from cach end to the c arging opening 2, asindicated in Fig. 1, the inner faces 8 of the walls below the-*archbeing vertical, and preferably somewhat tapering, i. e., wider apart atone end than at the other for ease fof removal of the coke. By thisconstruction the oven com- /prises a continuous coking retort of approximately thirty feet in length and of a, width of,4 say lfive feet, intovwhich the coal is charged througlr the opening 2 and leveled to .aheight of about two to three feet bet tween the Walls and within theends, which are closed by the usual brick closures 4 to prevent entranceof excess air, during coking. The ovens are preferably provided withdouble doors`5, 5, at"each end, said doors l and is readily LettersPatent.

Patented March 10, 1 908.

. Application mea Npvemberfao, i907.` senammioaoa '4 `being in' pairsbelow and above the middle y and lined'with brick, losing means-maybeportion 'of the opening, although any suitable c lused for securing goodresults. i

After the coking ,operation andthe burning-off of all of the gasesl andlbitumii-ious matten'and while the coke isstill infan incandescentlcondition prior', yto Athere remains upon its top surface rafo'entainric r-'du'st splinte'rs, etc., matter is ordinarily removed' `fromtheoven with the'coke and, comniin Its presence'in theecoke isobgectionablefand HIJ urlous inthe process of smeltingiron oregleatherewah.

quenching, 1

Aes roy ortionl of` ashes, partially `burnedfcoal, I l

.which foreign inthe blastfurnace, resultingin such'imurities' being`fused with the iron,.ajnd resu ting 1n a more orlessimpureproductwherever 4 Atfthe termination of the cokingoperation,

such coke is" used in thev artsl these impuri- I tles, andparticularlythe'lightf-ash,remain lightlyrestingon the top surface ofremoved byo a blast of-air-er othergaseous Huid, the 'construction ofthe. oven itself, ofthe ty e shown,gbeing particularly-adapted for t esuccessful operation,"

fter the `doors have, been opened andthe brickwork removed, a clearIopening is-provided 'through each opposite end,A and -upon introducingthe blast at one end a circulation the coke 1s set up throughout thetunnel of the oven f.

which confines its effect to the lon itudinal- Atop surface of the coke,and `to stices of the coke and between the coke and the sideqwallsofthe-oven;4

It will be understood that in the opera--` tion of coking, fevicesareformed during the transformation from a bituminous to a carbonaceousmass, 'and that the main body ofthe charge shrinks away from contactwith 4the side walls, leaving openings into which other impurities willfall, andv the ashes and from which they are removed by my inll.roved'process. The terminal nozzle of the lastlipe may be of sufficient lengthto be intro ucel gradually alonfr oven, the blast removing all theparticles and waste matter from the surfaces and all spaces andinterstices, carrying it outthrough the otherv end.

In carrying out my invention I- employ a main supply-pipe 7, aid alongin front o or adjacent to the front ovens, with which by flexible hose8, connection may be made at intervals as desired, the hose being ofsufficient Wall of the bank ofL length for free manip-A the area of theI coke by removing the loose impurities from 1 the. surface of the cokecharge in the oven, thereby preventing the commingling of the ashes andother impurities with the main charge inthe irocess of drawing ordischarging from t eoven, and obviating the necessity of cleaning the-coke by screening or other separatln means.

in applying the last while the coke is stili hot and before quenching,the hot, dry quality of the impurities, together with the radiatingheat, andthe heated air of the blast,

eatly-assist in their separation and removal y the blast. Afterquenching the impurities are wet and are thoroughly impregnated with andadhere to the coke so that their separation by any other subsequentscreening or cleaning operation is necessarily imperfect, laborious andexpensive:

When carried out in the manner described immediately. after the chargeis thoroughly v coked and while it isstill in a highly heated orincandescent condition, the removal of the impurities is not onlyfacilitated by the buoyant effect of theradiated heat, but is renderedeasy, cheap and thorough, occupying but three or four minutes-forcleaning the entire charge, and a further advantage is that thetemperature ofthe charge is' appreciably lowered b the blast of air.

While t e best results may be secured in an t oven of the typedescribed, I do not desire to be understood as limiting it to an oven ofany particular dimensions or proportions, but generally to an oven ofythe Belgian type.

Having described my invention, what I claim and desire to secure byLetters Patent, 1s:

1.y In the manufacture of coke, the process of removing the ashes, ctc.,from the top surface of the coke by introducing a blast of air at oneportion of the charge, and directing it across the surface and towardsan outlet opening remote from the point of introduction and leading tothelatmosphere, prior to 'uenching the charge in thc oven, substantiallyas set forth.

2. ln the manufacture of coke, the process ofburning the charge in aBelgian oven, opening the ends `'thereof after the coking operation,-and introducing a blast of air at one en d, whereby the loose impuritiesare rcmoved from the charge and carried Athrough the oven and outwardlythrough its; other end, substantially as set forth. t

3. In the manufacture of coke, the prooess of burning the charge in alongitudinal oven having a closed opening at each end, opening the 0ndthereof after the coking operation, introducing a blast of air from oneend overthe surfaces of the charge while it is highly heated and before(uen'ching whereby the expanding blastv and radiated heat remove andcarry the loose impurities from the coke through the oven and outwardlythrough the other end substantially as set forth.

In testimony whereof 1 afiix my signature in presence of two witnesses.A

JoHN u. mLLMA'N. Witnesses: v l

MARGARET C. KUBLE, C. M. CLARKE;

